The official Japanese Bandai Namco Entertainment YouTube channel, stylized as "876TV, information pills " uploaded a video discussing the latest Tales of Link news, this site specifically an upcoming event for a collaboration between Tales of Link and Tales of Zestiria the X.
Hosting the video is the "Viva! Tales of" mascot Viva-kun and "Vivako," a new female puppet assisting Viva-kun. In the video, it is announced that a stream for the collaboration between Tales of Link and Tales of Zestiria the X will be held in the near future. The stream in question is planned for March 8th, 2017 and will be broadcasted on Nico Nico Douga. Those who will be present at the event include Ryohei Kimura (Tales of Zestiria's Sorey), Ryota Osaka (Tales of Zestiria's Mikleo), Shiori Mikami (Tales of Link's Sara), and Asami Seto (Tales of Link's Kana.) In this specific video, Sorey and Mikleo are seemingly referred to as by their Tales of Zestiria the X counterparts.
It should be noted that, while the international version of Tales of Link is currently featuring some Tales of Zestiria the X content, there is no guarentee that the same kind that will be shown at the event will be readily available for those outside of Japan.